Full list of all 44 Assassin's Creed achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
You've collected every Flag in the Kingdom belonging to Richard.
You've collected every Damascus Flag.
Every Templar has fallen to your hand.
You've collected every Jerusalem Flag.
You've collected every Templar Flag in Acre.
You've collected every Teutonic Flag in Acre.
You've collected every Hospitalier Flag in Acre.
You've collected every Masyaf Flag.
You've discovered every Reach High Point.
The people of Jerusalem will be forever grateful for what you've done.
The people of Acre will be forever grateful for what you've done.
You've gathered quite a supply of throwing knives.
Survival at its best, for over 10 minutes, nothing was able to hinder your flight.
The people of Damascus will be forever grateful for what you've done.
Nothing can hinder the descent of an Eagle. Over 50 people have fallen to your relentless attacks.
You've witnessed Altair's Memorable Moments in all their splendor.
Over 100 city guards have fallen to your hunt.
A strange vision has appeared to you. What could it mean?
Completed Assassin's Creed.
You've made a friend within the walls of Abstergo Industries.
You've slain Robert de Sable, but there is one more...
You've fully honored the tenets of the Creed. You are a Master Assassin.
Over 75 guards were felled by your knives.
Desmond and Altair have been completely synchronized.
You've slain Sibrand, the Teutonic Leader of Acre.
You've slain Jubair, the Scribe of Damascus.
You were bold enough to challenge 25 soldiers in a single fight... and win.
You managed to scare away 25 beggars. I hope you're proud of yourself.
You've soared with the eagles and landed safely over 50 times.
Over 50 people have felt the deadly sting of your blade.
You've slain Majd Addin, Regent of Jerusalem.
You've slain William of Montferrat, Liege-Lord of Acre.
You remain undefeated for over 100 battles.
The Merchants of the land now know you VERY well.
You've slain Abul Nuqoud, Merchant King of Damascus.
Over 100 people have witnessed your deadly performance with a blade.
You've slain Talal, Slave Trader of Jerusalem.
You've slain Garnier de Naplouse, Hospitalier Leader in Acre.
Scholars know you well and have helped you over 20 times.
You've slain Tamir, Black Market Merchant in Damascus.
Like a Blade in the Crowd, your target never knew his death laid wait within his very shadow.
You have found the traitor and have brought him before Al Mualim.
You've protected Masyaf from the Templar invasion.
You've successfully completed the Animus tutorial.